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Millex-GS Syringe Filter Unit, 0.22 µm, mixed cellulose esters, 25 mm with vented inlet, ethylene oxide sterilized

Millex-GS注射过滤器单元,0.22μm,混合纤维素酯,25mm具有通气入口,环氧乙烷灭菌

Company: EMD Millipore
Catalog#: SLGSV255F
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A 3D Culture System of Human Immortalized Myometrial Cells
Author:
Date:
2016-10-20
[Abstract]  Myometrium forms the middle layer of the uterus and is mainly composed of the smooth muscle cells. The cells in vitro are usually grown in a single layer (2-dimensional; 2D) format, whereas in vivo cells are structured in an extracellular matrix scaffolding that allows the cells to communicate and respond to environmental cues. We have developed human myometrium and leiomyoma 3-dimensional (3D) culture, wherein the cells retain their molecular characteristics and respond to environmental cues (Malik and Catherino, 2012; Malik et al., 2014). [摘要]  子宫肌层形成子宫的中间层,主要由平滑肌细胞组成。细胞在体外通常生长在单层(2维; 2D)格式中,而体内细胞在细胞外基质支架中结构化,其允许细胞沟通和响应环境线索。我们已经开发了人子宫肌瘤和平滑肌瘤3维(3D)培养物,其中细胞保留其分子特征并响应环境线索(Malik和Catherino,2012; Malik等人,2014)。 br /> [背景] 在过去十年中,随着更多实验室从使用人工2D格式的细胞培养转移到3D细胞培养模型系统,观察到一定的转变,其中细胞生长在允许它们附着并获得更生理结构的基质中。该模型系统为细胞提供更自然的分化状态,并且培养的细胞在体内形成组织样环境。这是一个详细的协议为myometrium 3D细胞培养生长胶原-1矩阵,修改从Malik和Catherino(2012年)。

Determination of Cellular Phosphatidylinositol-3-phosphate (PI3P) Levels Using a Fluorescently Labelled Selective PI3P Binding Domain (PX)
Author:
Date:
2016-08-20
[Abstract]  The lipid Phosphatidylinositol-3-phosphate [PtdIns3P or PI(3)P] plays many membrane trafficking roles and is primarily produced by the Class III PI3K, VPS34. Determining the level of cellular PI(3)P however can be complex. Extraction of cellular lipids by methanol/chloroform can struggle to separate and identify distinct phospholipid species. Alternately mass spectrometry may be utilised but this requires significant set up of specialised equipment and time to utilise.

Use of a PI(3)P-binding-specific recombinant protein domain is a quick method for ascertaining cellular PI(3)P levels and can also allow visualisation of sub-cellular localisation. The PX domain of p40phox (herein referred to as PX) is very specific for PI(3)P over other phospholipid species (Kanai et al., ...
[摘要]  脂质磷脂酰肌醇-3-磷酸[PtdIns3P或PI(3)P]扮演许多膜贩运角色,主要由III类PI3K,VPS34产生。然而,确定细胞PI(3)P的水平可以是复杂的。通过甲醇/氯仿提取细胞脂质可能难以分离和鉴定不同的磷脂种类。或者可以使用质谱法,但这需要大量设置专门的设备和时间来利用。
 使用PI(3)P结合特异性重组蛋白结构域是用于确定细胞PI(3)P水平的快速方法,并且还可以允许亚细胞定位的可视化。 p40phox的PX结构域(本文称为PX)对PI(3)P比其它磷脂种类非常特异(Kanai等人,2001)。然而,在细胞中直接表达PX可能是有问题的,因为它将以显性负性方式作用,以比内源蛋白更大的亲和力结合和螯合PI(3)P,从而干扰细胞途径和PI(3)P水平。因此,使用荧光标记的PX后细胞固定更合适,因为它能突出显示PI(3)富集结构,没有扰乱系统的风险。

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